Ah, Paris, we bid you adieu. For both scientific and economic reasons, the Paris Climate Accord is pure numbskullery. We should all be grateful that President Trump has decided to revoke the expensive promises made by Barack Obama under the agreement in a willful effort to appease the world’s rent seekers.

From a scientific perspective, the accord’s prescriptions are premised on a partial effect: absent any feedbacks, carbon emissions would raise the atmospheric temperature slightly. But feedback effects are massively important, as anyone familiar with the climate models’ terrible track record of predictive performance might guess. Water vapor, cloud formation, wind currents, and the response of the Earth’s biomass are just some of the effects that impinge on the relationship between atmospheric carbon and temperatures. In addition, carbon forcings are relatively minor compared to the energy impulses delivered by natural sources, including solar activity and the Earth’s varying axial tilt. Paleoclimate data shows that the world has been this warm before, and warmer.

The economic case against the Paris Accord is even stronger. The very idea that authorities would impose huge material sacrifices on mankind in an effort to prevent a threat for which the evidence is so weak should give pause to any rational individual. Beyond that, however, the real function of the accord was not so much carbon mitigation as it was a shift in the distribution of wealth. This quote of Steven Allen, in a scathing assessment of the agreement, is instructive (forgive his mid-sentence switch to sarcasm):

“Mainly, it’s about taking money from taxpayers and consumers and businesspeople and electricity ratepayers and giving it to crony capitalists, and taking money from people in relatively successful countries and giving that money to rich people in poor countries, to the benefit of members of governing elites who support the Paris deal for the good of humanity and not at all because they expect to line their pockets with it.“

World carbon emissions were expected to keep rising at least through 2030 under the agreement. The subsidies it promised to crony capitalists in the renewable energy industry were to generously fund technologies that are not economically viable without government support, to the detriment of relatively clean-burning fossil fuels, not to mention nuclear power. The U.S. promised to reduce absolute carbon emissions, but the world’s greatest emitter of carbon dioxide, China, promised only to seek to limit emissions per unit of GDP, but not until sometime down the road. That means China’s level of emissions might not reverse, given the rapid growth of the Chinese economy. India’s commitment is similar. And Russia promised a reduction relative to a depressed 1990 level of emissions, which means they have plenty of room for growth.

As for the U.S., where absolute carbon emissions have been decreasing since 2007, the Paris Accord relied on so-called “voluntary” limits to be imposed by federal mandates. Financial demands were made by developing countries under the deal: $100 billion per year. And who would pay for that? Taxpayers in the developed countries, of course. One can only imagine the lust of unaccountable third-world officialdom for those funds. Thus far, the U.S. has paid only $1 billion into the so-called Green Climate Fund, and at least half of that was taken from a State Department account from which disbursal did not require Congressional approval.

“The Paris Agreement is a ‘voluntary’ agreement because its architects knew it would never pass the US Senate as a treaty. Why? Because the idea of the agreement is that the US government’s regulatory agencies would impose extreme mandates on its energy sector: how it should work, what kinds of emissions it should produce, the best ways to power our lives (read: not fossil fuels), and hand over to developing world regimes billions and even trillions of dollars in aid, a direct and ongoing forcible transfer of wealth from American taxpayers to regimes all over the world, at the expense of American freedom and prosperity. …

The exuberant spokespeople talked about how ‘the United States’ had ‘agreed’ to ‘curb its emissions’ and ‘fund’ the building of fossil-free sectors all over the world. It was strange because the ‘United States’ had not in fact agreed to anything: not a single voter, worker, owner, or citizen. Not even the House or Senate were involved. This was entirely an elite undertaking to manage property they did not own and lives that were not theirs to control. …

The Paris Agreement is no different in its epistemological conceit than Obamacare, the war on drugs, nation-building, universal schooling, or socialism itself. They are all attempts to subvert the capacity of society to manage itself on behalf of the deluded dreams of a few people with power and their lust for controlling social and economic outcomes.“

The popular fascination with climate scare stories has provided a useful channel of influence for would-be central planners and redistributionists. These social dementors reject the proposition that science is a process of continuing challenge and testing, thereby subverting the very notion of scientific inquiry. They make the laughable claim that 170 years of temperature data, much of which is quite sketchy, is sufficient to draw strong conclusions about the trends and dynamics of the climate on a four billion year-old planet.

Even worse, the climate alarmists insist that they have a monopoly on scientific knowledge, despite a significant share of skeptics in the climate science community. But in pursuit of that monopoly, the alarmists have gone so far as to undermine the integrity of the peer review process in the climate literature and to manipulate temperature data to exaggerate recent records. They have promoted the false claims that cyclonic storm energy has increased with carbon concentration and that sea levels are rising at an increasing rate. (Coastal property values don’t seem to reflect those concerns.) They would have us confuse actual climate data with model predictions, and they continue to offer prescriptions based on carbon-forcing models after many years of terrible forecast performance. They claim that a small increment (one part per 10,000) to the concentration of a trace atmospheric gas will dominate other forces exerting far greater variations in energy. They ignore the benefits that an increase in nourishing carbon dioxide and warming can provide. And they make the anthropocentric claim that a costly sacrifice by mankind, in an attempt to reduce that trace gas slightly if at all, will pay off reliably by reducing global temperatures, despite the very modest claims on those grounds by the Paris Accord itself.

Human civilizations have experienced many of their worst trials during periods of cooling and cold temperatures over the past 8,000 – 10,000 years. These were episodes associated with droughts as well. Conversely, civilizations have tended to prosper during warm, wet periods. These associations between human progress and the natural environment are discussed in a pair of articles by Andy May: “Climate and Human Civilization Over the Past 18,000 Years“, and “Climate and Human Civilization for the Past 4,000 Years“. The articles are part climate science, part history, and part anthropology, with many fascinating details.

May presents large charts that can be downloaded, and they are especially interesting to ponder. He uses historical temperature proxies from Antarctica and Greenland to construct the charts, along with more recent data on measured surface temperatures in Greenland. According to May, the proxies are highly correlated with other proxy data from less extreme latitudes. Several important takeaways are the following:

Warm periods in the historical record are associated with wet conditions, and cold periods are associated with dry conditions. This is intuitive, as warm air holds more moisture than cold air.

There are estimates of temperatures going back more than 800 million years; apparent cyclical regularities in temperatures have lasted as long 150 million years. Cycles within cycles are evident: a 100,000 year cycle is prominent as well as a 25,000 year cycle (see #4 below).

Today’s temperatures are not as high as those prevailing during about 200 years of the so-called Roman Warm Period, or during a span of similar length in the so-called Minoan Warm Period, about 3,300 years ago. Today’s temperatures are much lower than estimates for much of the earth’s pre-human history.

The southern hemisphere has more volatile temperatures than the northern hemisphere due to the tilt of the earth’s axis at perihelion in January, when the earth is closest to the sun. That means the southern hemisphere tends to have warmer summers and colder winters. That will reverse over the next 10,000 years, and then it will reverse again. There is more land mass in the north, however, so it’s not clear that less extreme weather in the north helps explain the hugely lopsided distribution of development and population in that hemisphere.

Recent increases in sea levels have been small relative to the years following the Little Ice Age. Projected increases over the next 50 years are of a magnitude that should be easily manageable for most coastal areas.

Atmospheric carbon concentration seems to lag major increases in temperatures by about 800 years, raising a question of causality. Today’s carbon concentration is low relative to earlier epochs; it has been increasing for thousands of years, clearly independent of human activity, and is now near 400,000 year highs.

Civilizations have blossomed with warm temperatures and they have collapsed or hit extended periods of retarded progress with declines in temperatures. Human agriculture was born as temperatures rose out of the depths of a glacial period about 10,000-12,000 years ago. Rome flourished during a warm cycle and collapsed as it waned. The Vikings settled in Greenland and Newfoundland during the Medieval Warm Period and were eliminated by the Little Ice Age. May cites a number of other examples of temperature cycles bringing on major shifts in the course of human progress. There are many possible explanations for the decline of past civilizations, but extremely low temperatures, droughts, and lengthy periods of weather inhospitable to agriculture have been important.

The fashion today is to insist that only dramatic changes in our use of energy can avert a global warming catastrophe. It is not clear that any effort by humans to manipulate global temperatures can overcome the natural forces that are always driving temperature change. For that matter, it is not clear that carbon dioxide is a bad thing, or that diverting vast quantities of resources to reduce it would be wise. CO2 is certainly not a pollutant in the normal sense of the word. Here is an excerpt from May’s conclusion in his “4,000 years” article, which speaks volumes:

“First, there is no perfect temperature. Man, even in pre-industrial times, adapted to a variety of temperatures and he has always done better in warm times and worse in cold times. Second, why would anyone want to go back to the pre-industrial climate? The Washington Post says the goal of the Paris Climate Conference was get the world to agree to limit global warming to less than two degrees above pre-industrial temperatures. Pre-industrial times? That’s the Little Ice Age, when it snowed in July, a time of endless war, famine and plague. According to the Greenland ice core proxy data, temperatures 180 years ago were nearly the coldest seen since the end of the last glacial period 10,000 years ago! Why measure our success in combating anthropogenic warming, if there is any such thing, from such an unusually cold time?“

In advanced civilizations the period loosely called Alexandrian is usually associated with flexible morals, perfunctory religion, populist standards and cosmopolitan tastes, feminism, exotic cults, and the rapid turnover of high and low fads---in short, a falling away (which is all that decadence means) from the strictness of traditional rules, embodied in character and inforced from within. -- Jacques Barzun